JPH09259507A - Information-reproducing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording apparatus for recording information of sub images and sound other than a main image so that the information can be suitably selected when reproduced and an information-recording medium recording the information, and provide a reproducing apparatus which can select recorded information and reproduce in a variable manner. SOLUTION: Identification information describing languages corresponding to stream numbers of sub images or sound along with the sub images of a plurality of languages and sound of a plurality of languages is recorded together with the sub images or sound. When it is detected to forcibly output a sub image at the reproduction time (step S1), if the language of the sub image to be displayed is set beforehand, the sub image of the language is displayed (step S3). If the language of the sound to be output is selected beforehand, the sub image corresponding to the language of the sound is displayed (step S6). If the language to be reproduced and displayed which is proper to the reproducing apparatus is set, the sub image of the language is displayed (step S9).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording medium such as a high density optical disc capable of recording information such as video and audio represented by a DVD at a high density, and information recording on the information recording medium. It belongs to the technical field of a recording device and a reproducing device for reproducing information from the information recording medium.

[0002]

2. Description of the Related Art Conventionally, as an optical disc on which information such as video and audio is recorded, a so-called LD (Laser Disk),
CDs (Compact Disks) and the like have become widespread.

In these LDs and the like, video information and audio information are recorded together with time information indicating the time at which each piece of information based on the reproduction start position of each LD or the like should be reproduced. Therefore, in addition to general normal reproduction in which recorded information is reproduced in the order in which it is recorded, for example,
On the CD, it is possible to perform reproduction such as extracting and listening to only a desired song out of a plurality of recorded songs or listening by changing the playback order at random.

[0004]

However, the above L
In D and the like, there is a problem in that the viewer has a choice with respect to the displayed video and the reproduced sound, and the viewer cannot select and watch them, or perform so-called interactive rich reproduction. there were.

That is, for example, when watching a foreign movie recorded on an LD, the language used for the subtitles displayed on the screen is selected (for example, Japanese subtitles and original language subtitles are selected). When selecting and displaying or listening to music recorded on a CD, select the voice of the music (for example, select whether to listen to English lyrics or Japanese lyrics) You can't do that.

On the other hand, at present, proposals and developments of a DVD, which is an optical disk in which the storage capacity is increased about 10 times without changing the size of the optical disk itself as compared with the conventional CD, are being actively made. A recording layer that allows viewers to make selections such that they can select and watch them, or so-called interactive playback, has not yet been proposed or developed for a playback device. No
Further, it is the current situation that the problem itself that the viewer has a choice and performs interactive rich reproduction is not recognized by those skilled in the art.

[0007] Therefore, an object of the present invention is to record information by a recording device and a recording device for recording information so that an appropriate selection can be made at the time of reproduction with respect to video and audio displayed in addition to the main video. An object of the present invention is to provide an information recording medium and a reproducing device capable of reproducing various recordings by selecting the recorded information.

[0008]

In order to solve the above-mentioned problems, the invention described in claim 1 provides main video information such as video data and a plurality of types of sub-picture data corresponding to the main video information. Of sub-picture information and recording information including audio information such as a plurality of types of audio data corresponding to the main-picture information, a sub-picture stream number and a sub-picture language for identifying each kind of the sub-picture information. A DV recorded together with sub-picture type identification information such as a code and identification information including audio type identification information such as an audio stream number and an audio language code for identifying the type of each audio information.
An information reproducing apparatus for reproducing the recorded information from an information recording medium such as D, and detecting means such as a pickup for detecting the recorded information and the identification information from the information recording medium and outputting as a detection signal, a demodulation correction unit, and the like. An extracting means such as a demultiplexer for extracting the identification information from the detection signal, a display sub-picture type information indicating a kind of the sub-picture information to be displayed and a reproduction sound indicating a kind of the audio information to be reproduced. Setting information such as a setting section for setting type information and unique reproduction display type information indicating the type of sub-picture or audio to be reproduced and displayed, which is peculiar to the information reproducing apparatus, and the set display sub-picture type information and reproduction sound Storage means such as a memory for respectively storing the type information and the unique reproduction display type information, and the stored display sub-picture type information and reproduced audio type information and the unique reproduction Based on the display type information, and includes a control means such as a controller for controlling reproduction of the display and the audio information of the sub picture information by using the identification information the extracted.

According to the operation of the invention described in claim 1, the detection means includes the recording information including the main video information, the plurality of types of sub-video information, and the plurality of types of audio information and the sub-video type identification from the information recording medium. Identification information including information and voice type identification information is detected and output as a detection signal.

Then, the extracting means extracts the identification information from the detection signal. On the other hand, the setting means sets the display sub-picture type information, the reproduced audio type information, and the unique reproduction display type information.

The storage means stores the set display sub-picture type information, the reproduced audio type information, and the peculiar reproduction display type information, respectively. With these, the control means controls the display of the sub-picture information and the reproduction of the audio information by using the extracted identification information based on the stored display sub-picture type information, the reproduced sound type information, and the unique reproduction display type information. .

Therefore, the set display sub-video type information, the reproduced audio type number, and the peculiar reproduction display type information are stored, and the display of the sub-video information and the reproduction of the audio information are controlled based on the stored information. Therefore, it is possible to select and reproduce an appropriate type of sub-picture and audio information that respects the will of the viewer at the time of reproduction.

In order to solve the above problems, the invention according to claim 2 provides the information reproducing apparatus according to claim 1, wherein the information recording medium has the sub-picture information at the time of reproducing the recorded information. Is further recorded, and the extraction means is configured to extract the timing information together with the identification information.

According to the operation of the invention described in claim 2, in addition to the operation of the invention described in claim 1, timing information indicating a timing at which the sub-picture information should be forcibly displayed on the information recording medium. Is further recorded, and the extraction means extracts the timing information together with the identification information, so that the necessary sub-picture information can be forcibly displayed during reproduction based on the timing information.

In order to solve the above problems, the invention according to claim 3 is the information reproducing apparatus according to claim 1 or 2, wherein the plurality of types of sub-picture information are described in a plurality of languages. With the subtitle information, the sub-picture type identification information is identification information for identifying the type of the language, further, the plurality of types of audio information is audio information configured in a plurality of types of languages, The voice type identification information is configured to be identification information for identifying the type of the language.

According to the operation of the invention described in claim 3, in addition to the operation of the invention described in claim 1 or 2, the plurality of types of sub-picture information are caption information described in a plurality of languages. In addition, the sub-picture type identification information is identification information for identifying the type of the language, further, the plurality of types of audio information is audio information configured in a plurality of types of languages, and the audio type identification information is Since it is identification information for identifying the type of language, it is possible to reproduce subtitles and audio in an appropriate language corresponding to the main video information during reproduction.

[0017]

Next, a preferred embodiment of the present invention will be described. In addition, the embodiment described below describes an embodiment in which the present invention is applied to the DVD.

In the following embodiments, an example of each constituent element in the claims shown on the left side of the following list is made up of the elements shown on the right side of the following list.

Sub-picture and audio type ...... Language type Sub-picture type identification information ...... Sub-picture stream number and sub-picture language code Audio type identification information ………… Voice stream number and audio language code Display sub-picture type information ……… Sub video stream number and sub video language code stored in memory Playback audio type information ………… Audio stream number and audio language code stored in memory Unique playback display type information …… In nonvolatile memory Stored unique playback display language specific to the playback device Sub-picture information ………………: Sub-picture data Audio information ……………………: Audio data Timing information ……………: Forced image output commands (I) information to an embodiment the start of the recording medium, the actual information recording medium reproduced by the reproducing apparatus described later as an information reproducing apparatus of the present invention D is a form of
The physical and logical configuration of the record information recorded in the VD and its operation will be described with reference to FIGS. 1 to 5.

First, the recording format (physical recording format) of the video information and the audio information on the DVD will be described with reference to FIG. The video information of the present embodiment mainly includes main video information that is a video to be displayed and sub-video information that is a sub-video that should be superimposed (inserted) on the main video as necessary. I shall.

As shown in FIG. 1, the DVD 1 of the embodiment
Has a lead-in area LI in its innermost peripheral portion and a lead-out area LO in its outermost peripheral portion, during which video information and audio information are respectively ID
It is divided and stored in a plurality of VTSs 3 (VTS # 1 to VTS # n) having (identification) numbers. Where V
A TS (Video Title Set) is a related title (having the same attributes such as the number and specifications of audio information or sub-picture information, supported languages, etc.) (a movie or other work that the producer intends to present to the viewer. ) As a set (collection), and more specifically, for example, for one same movie, a plurality of movies in different languages are recorded as titles, or the same movie Also, the movie version and the special version are recorded as different titles. Further, at the beginning of the area where VTS3 is recorded,
Video manager 2 is recorded. The information recorded as the video manager 2 is, for example, a menu indicating the name of each title, information for preventing illegal copying, an access table for accessing each title, and the like recorded on the DVD 1. Information related to the entire information and audio information is recorded.

Next, one VTS 3 starts with the control data 11 and has a plurality of VTSs each having an ID number.
It is divided and recorded in OB10. Here, a portion composed of a plurality of VOBs 10 is called a VOB set (VOBS). This VOB set includes control data 11 which is other data which constitutes VTS3,
In order to distinguish a plurality of VOBs 10 which are the entities of video information and audio information from each other, a VOB set is set for the relevant entity.

The control data 11 recorded at the head of the VTS 3 is PG which is various information regarding a program chain including a plurality of programs which are logical divisions of a combination of a plurality of cells (cells will be described later).
Information such as CI (Program Chain Information) is recorded. Further, in each VOB 10, in addition to the control information, the substantial part of the video information and the audio information (the video or audio itself other than the control information) is recorded.

Further, one VOB 10 is composed of a plurality of cells 20 each having an ID number. Here, one VOB 10 is configured to be completed by a plurality of cells 20, and one cell 20 is second VOB 10.
It does not straddle.

Next, one cell 20 is composed of a plurality of VOB units (VOBU) 30 each having an ID number. Here, the VOB unit 30 is an information unit including video information, audio information, and sub-picture information (referring to sub-picture information such as subtitles in a movie).

Then, one VOB unit 30 includes a navigation pack 41, video data 42 as image information,
It is composed of audio data 43 as audio information and sub-picture data 44 as sub-picture information. Here, only video data is recorded as the video data 42, and only audio data is recorded as the audio data 43. Further, as the sub-picture data 44, only graphic data such as characters and figures as sub-pictures is recorded. The video data 42, the audio data 43, and the sub-picture data 44 are not recorded as a group, but are divided into a plurality of pieces and recorded in the VOB unit 30 as shown in FIG. .

It is specified by the standard that the DVD 1 can record 8 kinds of audio and the recordable 32 kinds of sub-picture. Furthermore, on the DVD 1, audio and sub-pictures in a plurality of different languages are recorded by forming streams each having a stream number as separate stream identification information for each kind of audio or sub-picture and each language. It

Further, in the portion corresponding to the sub-picture data 44, when the DVD 1 is reproduced, the compulsory display timing of each sub-picture data 44 is compulsorily displayed so as to be compulsorily displayed on the display screen. A picture output command (a kind of command described later) is described.

Explaining this forced picture output command, for example, when a Japanese movie (the dialogue is in Japanese) is being played back, a German person appears in it and speaks the dialogue in German. , It may not be possible to comprehend the German dialogue with the voice as it is. At this time, Japanese corresponding to the German dialogue is recorded as the sub-picture data 44 together with the compulsory picture output command, and the corresponding Japanese dialogue is forced to the screen as a subtitle at the timing of the German dialogue. It superimposes (even if the viewer who is playing does not want to display subtitles).

As another command regarding the sub picture data 44 recorded together with the forced image output command, when the viewer has set that each sub video should be displayed, each sub video is output. There are a display start command for displaying an image and a display end command for stopping the image output.

Further, in the DVD 1, the above-mentioned stream numbers (audio stream number corresponding to audio and sub-picture stream number corresponding to sub-video) corresponding to the types of audio and sub-video recorded for each VTS 3 are recorded. The described identification information IDs shown in, for example, FIGS. 2A and 2B are the beginning of each VTS 3 and the video manager 2 (the identification information ID recorded in the video manager 2 is the identification information ID of each VTS 3). It has been recorded as a. Here, in FIG. 2A, Japanese voices and English voices are recorded as voices respectively corresponding to stream numbers, and in FIG. 2B, Japanese and English voices are recorded as sub-pictures (captions). , German, French, and Chinese subtitles are recorded corresponding to the stream numbers. These languages are actually coded as language codes and described for each stream number. Then, the viewer can select and view these audio and subtitles at the time of reproduction.

In FIG. 2, the same stream number corresponds to the same kind of language, but it does not necessarily have to correspond to the same language. Further, although not shown in FIG. 2, in some cases, different sub-pictures having the same language and different sub-pictures can be recorded as different streams.

On the other hand, the reproduction time corresponding to one VOB unit 30 (one navigation pack 41 and one navigation pack 4 concerned).
The reproduction time corresponding to the data recorded between the navigation pack 41 adjacent to 1 is recorded as having a length of 0.4 seconds or more. Furthermore, in one VOB unit 30, The pack 41 is always present at the beginning, but other video data 42, audio data 43
Each of the sub picture data 44 and the sub picture data 44 is not necessarily a VOB.
It does not have to exist in the unit 30, and even when it exists, the number and order thereof are free.

Here, each of the video data 42, the audio data 43, and the sub-picture data 44 shown in FIG. 1 is generally called a pack P. That is, one VOB
In the unit 30, the video data 42, the audio data 43, and the sub-picture data 44 are divided and recorded in packs P respectively, and the pack P in which the video data 42 is recorded is recorded as a video pack and audio data 43. The pack P in which is recorded is called an audio pack, and the pack P in which the sub-picture data 44 is recorded is called a sub-picture pack. These packs P are recording units set based on the MPEG2 system, which will be described later, used when recording recording information on the DVD 1, and the pack header recorded at the beginning of each pack P has a pack unit, respectively. SCR (System Clock Reference) indicating the read start time on the playback time axis at which the data contained in the pack P of the above is read from the track buffer in the playback apparatus described later and input to each buffer should be started.
The read start time information, which is called, and a start code indicating the start of the pack P are recorded. Also,
For each of the packs P, the video data 4 is usually provided for each packet which is a recording unit obtained by further subdividing the pack P.
2, audio data 43 and sub-picture data 44
Is recorded, but in the DVD 1 according to the present embodiment,
Generally, one pack P is composed of one packet.

Finally, the navigation pack 41 searches information for searching for a video or audio to be displayed (specifically, an address on the DVD 1 where the video or audio to be displayed is recorded). DSI (Data Search)
Information) data 51 and PCI (Presentation Control I) which is information relating to display control when displaying video or audio that is searched based on the DSI data 51.
nformation) data 50. At this time, the DSI data 51 and the PCI data 50 are recorded by configuring a DSI packet and a PCI packet as the packet PT, respectively.

Further, all of the video data 42 included in one VOB unit 30 includes one or more GOPs (Grou (Grou)).
p Of Picture) and recorded. In addition, PCI
The data 50 includes, for a selection item selected by the viewer, highlight information defining the display and operation when the item is selected. With this highlight information, for example, a change in screen display for a selected item in a video (so-called menu screen) displaying an item to be selected by the viewer, a display position to be changed, and a command (selection corresponding to the selected item The command to be executed corresponding to the selected item is set.

Here, the video information necessary for composing and displaying the frame, the selection buttons, etc. necessary for composing and displaying the menu screen is recorded as the sub picture data 44.

Further, the GOP is an MPEG2 (Moving Picture Experts) which is a video compression system adopted when recording video information on the DVD 1 in the present embodiment.
It is the smallest video unit that can be independently reproduced, which is defined in the Group 2) system standard.

Here, the outline of the MPEG2 system will be described. Generally, in a continuous frame image, the frame images before and after one frame image are
In many cases, they are similar to each other and have a mutual relationship. MPE
The G2 method pays attention to this point, and based on a plurality of frame images transferred with several frames separated, another frame image existing between the plurality of frame images is interpolated based on a motion vector or the like of the original image. It is a method to generate in.
In this case, when recording another frame image,
By recording only the information about the difference and the motion vector from the plurality of frame images, it becomes possible to reproduce the other frame image by predicting from the plurality of frame images at the time of reproduction by referring to them. . This enables compressed recording of video.

Further, the outline of the GOP will be described with reference to FIG. It should be noted that FIG. 3 shows an example of a plurality of frame images forming one GOP 52. In FIG.
The case where one GOP 52 is composed of 12 frame images (in the MPEG2 system, the number of frame images included in one GOP 52 is not constant) is shown. The frame image displayed is I
It is called a picture (Intra-coded picture) and refers to a frame image that can reproduce a complete frame image only with its own image. Also, the frame image indicated by the code “P” is a P picture (Predic
tive-coded picture: Forward predictive coded video)
It is a predicted image generated by, for example, decoding the difference from the predicted image that has been reproduced by compensation based on the already decoded I picture or other P picture. Also, the frame image indicated by the code “B” is a B picture (Bidirectionally predic
tive-coded picture: bidirectional predictive coded video)
Not only the already decoded I picture or P picture, but also the predicted video reproduced by using not only the I picture or P picture recorded on the optical disk or the like in the temporal future but also for prediction. In FIG. 3, a prediction relationship (interpolation relationship) between pictures is indicated by an arrow.

The MPEG2 system used in the DVD 1 in this embodiment employs a variable rate system in which the amount of data contained in each GOP 52 is not constant. That is, when each picture included in one GOP 52 corresponds to a fast-moving moving image and the correlation between each picture is small, the amount of data for configuring each picture is large, and therefore The amount of data included in the GOP 52 is also large. On the other hand, if each picture included in one GOP 52 corresponds to a moving image that does not move so much and the correlation between the pictures is large, the amount of data for composing each picture also decreases, and GO
The amount of data included in P52 is also reduced.

In the above-described recording format having the hierarchical structure shown in FIG. 1, the manufacturer can freely set and record each section according to his or her intention. By performing reproduction for each of these sections based on the later-described logical structure, various reproductions rich in change are possible.

Next, a logical format (logical structure) in which information recorded by the physical divisions shown in FIG. 1 is combined will be described with reference to FIG. Note that the logical structure shown in FIG. 4 does not mean that information is actually recorded on the DVD 1 by that structure, but the data (particularly the cell 20) shown in FIG. 1 is combined in the logical structure shown in FIG. Information for reproduction (access information, time information, etc.) is recorded on the DVD 1, particularly in the control data 11.

To clarify the explanation, the lower hierarchy of FIG. 4 will be described. By selecting and combining a plurality of cells 20 from the physical structure described in FIG. The program 60 is logically constructed based on the producer's intention. The program 60 is also the smallest logical unit that can be accessed by a command by a controller in the playback device, which will be described later. It should be noted that one or a plurality of the programs 60 are collected,
Although it can be defined by the producer as the smallest unit that the viewer can freely select and view, this unit is P
It is called TT (Part Of Title).

Further, one program 60 is used for a plurality of cells 2
Since 0 is selected and logically configured, one cell 20 is used in a plurality of programs 60, that is, one cell 20 is reproduced in a plurality of different programs 60, that is, so-called cell 20 reuse. It is also possible to do it.

Here, regarding the number of one cell 20,
When the cell 20 is handled in the physical format shown in FIG. 1, it is treated as a cell ID number (indicated as cell ID # in FIG. 1), and in the logical format shown in FIG. It is treated as a cell number in the order of description.

Next, by combining a plurality of programs 60, one PGC (Program Chain) 61 is logically constructed based on the intention of the manufacturer. The above-mentioned PGCI (Program Chain Information) is defined in units of the PGC 61, and in the PGCI, the reproduction order of the cells 20 of each program 60 when the respective programs 60 are reproduced (the program 60 is defined by this reproduction order). A unique program number is assigned to each cell.), DVD1 of each cell 20
The address which is the upper recording position, the number of the head cell 20 to be reproduced in one program 60, each program 60
Reproducing method [(When recording information on the DVD 1 of the present embodiment, random reproduction (random reproduction by random numbers, the same program 60 may be reproduced a plurality of times.), Shuffle reproduction during reproduction. (Although it is the random reproduction by the same random number as the random reproduction, the same program 60 is reproduced only once, and the same program 60 is not reproduced plural times.) Or loop reproduction (one PGC 61 is reproduced many times). Any of the above), or a reproduction method by a combination of loop reproduction and random reproduction or shuffle reproduction can be selected and reproduced by the manufacturer for each PGC 61.] and various commands (The command that can be specified by the producer for each PGC 61 or cell 20) is included.
The recording position on the VD1 is in the control data 11 as described above, but in addition to this, in the case of PGCI related to the menu in the video manager 2, the control data of the video manager 2 (see FIG. 1) (see the figure). (Omitted)
Stored in.

Further, one PGC 61 has the above-mentioned PGCI.
In addition, substantive video and audio data are included as a combination of the program 60 (in other words, as a combination of the cells 20).

Further, in one PGC 61, it is possible to reuse the cell 20 shown in the description of the program 60 (that is, the same cell 20 is used by different PGC 61). Regarding the cells 20 to be used, in addition to the method of reproducing the cells 20 in the order stored in the DVD 1 (reproduction of consecutively arranged cells), the cells 20 are reproduced regardless of the order stored in the DVD 1 (for example, later). The manufacturer can select the method of reproducing the recorded cells 20 first (reproduction of non-continuously arranged cells).

Next, one title 62 is logically constructed by one or a plurality of PGCs 61. This title 62
Is a unit corresponding to, for example, one movie, and is complete information that the producer wants to provide to the viewer of the DVD 1.

Then, one VTS 63 is logically constructed by one or a plurality of titles 62. This VTS6
The titles 62 included in 3 have common attributes, and for example, a movie in a different language for one same movie corresponds to each title 62.
Information corresponding to one VTS 63 shown in FIG. 4 corresponds to information included in one VTS 3 shown in FIG. That is, the logical VT shown in FIG.
All the information contained in S63 is recorded as one VTS3.

Based on the logical format described above, the producer designates the information divided in the physical structure to form a video (movie or the like) that the viewer should watch.

In the description of the physical structure shown in FIG. 1, a plurality of cells 20 have IDs to facilitate understanding of the contents.
Although it is described that they are recorded in the order of numbers, in the DVD 1 of the embodiment, one cell 20 is actually shown in FIG.
In some cases, the data is divided into a plurality of interleaved units IU and recorded.

That is, for example, as shown in FIG. 5, the manufacturer configures one PGC 61A with cells 20 having ID numbers 1, 2 and 4 and another PGC 61B with cells 20 having ID numbers 1, 3 and 4. In the case of reproducing information from the DVD 1 based on the PGC 61A, only the cells 20 having ID numbers 1, 2 and 4 are reproduced, and when the information is reproduced from the DVD 1 based on the PGC 61B. In this case, only the cell 20 having the ID numbers 1, 3 and 4 is reproduced. In this case, if the cells 20 are recorded separately for each ID number, for example, in the case of the PGC 61A, the cell 20DVD with the ID number 4 starts from the recording position on the DVD 1 of the cell 20 with the ID number 2.
It takes time to jump the pickup for reproduction to the recording position on the cell No. 1, and depending on the capacity of the track buffer in the reproducing apparatus described later, the cell 2 of the ID number 2
It becomes impossible to continuously reproduce the cell 20 of 0 and the ID number 4 (hereinafter referred to as seamless reproduction).

Therefore, in the case shown in FIG. 5, the ID number 2
Cell 20 of ID number 3 and cell 20 of ID number 3 have such a length that the continuity of the output signal is not lost even if the input of the input signal is temporarily stopped according to the speed of the input / output processing in the track buffer. The interleaved unit IU (that is, the length at which the output signal from the track buffer can be continuously output even if the input signal to the track buffer is interrupted due to the pickup jumping only during one interleaved unit IU). In the interleaved unit IU) of the PGC6.
When reproducing based on 1A, only the interleaved unit IU forming the cell 20 corresponding to the ID number 2 is continuously detected and reproduced. Similarly, when reproducing based on the PGC 61B, only the interleaved unit IU forming the cell 20 corresponding to the ID number 3 is continuously detected and reproduced.
The length of the interleaved unit IU is determined in consideration of the capacity of the track buffer, as described above, and also in consideration of the performance of the drive mechanism such as the slider motor for performing the track jump. May be done.

In this way, one cell 20 is divided and recorded in a plurality of interleaved units IU according to the intention of the manufacturer, so that when the PGC 61 including the cells 20 with the ID numbers that are scattered is reproduced. However, the signal output from the track buffer is not interrupted, so that the viewer can watch the reproduced video without interruption.

The above interleaved unit IU
Is formed so as to be completed within one VOB 10, and one interleaved unit IU does not straddle a plurality of VOBs 10 adjacent to each other. Regarding the relationship between the interleaved unit IU and the VOB unit 30, one interleaved unit IU includes one or more VOB units 30, and one interleaved unit IU includes one VOB unit 30. It is configured to be completed, and one VOB unit 30 is not divided and does not straddle a plurality of interleaved units IU.

The logical structure and the recording information having the logical structure described above include the video data 42 as the main video information and the sub-picture data 4 corresponding to a plurality of types of languages.
4 and the audio data 43, it is necessary to record various control information. Therefore, in addition to recording a single movie, the above-mentioned record information is not limited to a plurality of types of audio and subtitles corresponding to the movie. It is effective to apply it to the DVD 1 having a large storage capacity capable of recording voices and subtitles of languages on the same optical disc. (II) Embodiment of Recording Device Next, FIG. 6 will be described with respect to an embodiment of a recording device for recording the control information including the above-mentioned identification information ID, the video data 42, the sub-picture data 44 and the audio data 43 on the DVD 1. It demonstrates using.

As shown in FIG. 6, the recording apparatus S1 according to the embodiment has a VTR (Video Tape Recorder) 70, a memory 71, a signal processing section 72, and a hard disk apparatus 7.
3 and 74, a controller 75, a multiplexer 75, a modulator 77, and a mastering device 78.

Next, the operation will be described. The VTR 70 has
Recording information R (including the video data 42, the sub-picture data 44, and the audio data 43) that is a material such as music information and video information to be recorded on the DVD 1 is temporarily recorded. Then, the record information R temporarily recorded in the VTR 70 is output to the signal processing unit 3 in response to a request from the signal processing unit 72.

The signal processing unit 72 A / D-converts the record information R output from the VTR 70, compresses it using the MPEG2 system, and time-multiplexes the audio information and the video information to compress the multiplexed signal Sr. Output as. After that, the output compressed multiplexed signal Sr is temporarily stored in the hard disk device 73.

In parallel with these, the memory 71 controls information for controlling reproduction of the recording information R (video manager 2, control data 11, navigation pack 41, PCI data 50, DSI data 51 in FIG. 1). And the cue sheet ST in which the above identification information ID, etc.) are described
The control information input in advance based on the above is temporarily stored, and is output as the control information signal Si in response to a request from the signal processing unit 72.

Then, the signal processing section 72 causes the time code T corresponding to the recording information R output from the VTR 70.
Based on t and the control information signal Si output from the memory 71, the above-mentioned identification information ID is separated from the control information by referring to the time code Tt and output as the corresponding identification information signal Sac. It is temporarily stored in the hard disk device 74. At this time, regarding the control information stored in the memory 71 other than the identification information ID,
Although not shown in FIG. 6, like the identification information ID, they are separated in the signal processing unit 72 and stored in the hard disk device 74.

The above processing is executed for the entire record information R. When the above process is completed for all of the recorded information R, the controller 75 reads the compression multiplexed signal Sr from the hard disk device 73 and the identification information signal Sac and other control information from the hard disk device 74, and based on these, the identification information. The additional information independently including the ID and other control signals is generated, and the corresponding additional information signal Sa is temporarily re-recorded in the hard disk device 74. This is because the compressed multiplexed signal Sr is included in each control information.
This is because there are things whose contents are determined by the results of Noh dash.

On the other hand, the controller 75 manages the time of each operation of the signal processing section 72, the hard disk device 73 and the hard disk device 74, and outputs the additional information signal S.
A is read from the hard disk device 74 and output, and an information selection signal Scc for time-multiplexing the compression multiplexed signal Sr and the additional information signal Sa is generated and output.

Thereafter, the compressed multiplexed signal Sr (video data 42, sub-picture data 44 and audio data 4
3 is included individually for each stream. ) And the additional information signal Sa based on the information selection signal Scc.
6 is time-axis multiplexed and output as an information-added compression-multiplexed signal Sap. At the stage of the information-added compression multiplex signal Sap, the information to be recorded is composed of the control information, the video information and the audio data by the switching operation using the information selection signal Scc of the controller 75, and the physical structure shown in FIG. It is a physical format). The identification information ID is included in each video manager 2 and each VTS 3.

When the sub-picture information exists, it is input to the signal processing section 72 from another means such as a hard disk device (not shown) and processed in the same manner as the picture information or the sound information.

After that, the modulator 77 adds an error correction code (ECC) such as Reed-Solomon code and modulation such as 8-16 modulation to the output information-added compression multiplexed signal Sap, and performs the disc recording signal Sm. Is generated and output to the mastering device 78.

Finally, the mastering device 78 records the disc recording signal Sm on a stamper disc which is a master (cutting die) when manufacturing an optical disc.
Then, using this stamper disk, an optical disk as a replica disk that is generally commercially available is manufactured by a replication device (not shown).

As described above, according to the recording apparatus S1, the recording information R including the above identification information ID is recorded on the DVD1. Therefore, when the recorded information R is reproduced from the DVD 1, the sub-picture data 44 and the audio data 43 can be selected and reproduced on the basis of the identification information ID. Playback can be done. Further, since the forced image output command is recorded together with the identification information ID,
It is possible to forcibly display the necessary sub-picture at the time of reproduction based on the compulsory image output command.

Furthermore, since the subtitle information described in a plurality of languages and the audio data 43 composed of a plurality of languages are recorded, it is possible to output subtitles and audio corresponding to the main video during reproduction. . (III) Embodiment of Information Reproducing Apparatus Next, an embodiment of a reproducing apparatus for reproducing the information recorded on the DVD 1 by the recording apparatus S1 will be described with reference to FIGS. 7 to 9.

First, the configuration and operation of the reproducing apparatus according to the embodiment will be described with reference to FIG. As shown in FIG. 7, the reproducing apparatus S2 according to the embodiment includes a pickup 80 as a detection / demodulation unit, a signal reading unit 81, a demodulation / correction unit 82 as a detection / demodulation unit, and a demultiplexer 83 as an extraction unit. , A main video decoder 84, a sub video decoder 85, a mixer 86, and an audio decoder 87.
A controller 88 as a control unit, a setting unit 89 as a setting unit, a memory 90 as a storage unit,
It is composed of a servo control unit 91 and a spindle motor 92. As the audio data 43 recorded on the DVD 1 in FIG. 7, Japanese and English voices are recorded, and the sub-picture data 4 is recorded.
As for 4, it is assumed that Japanese, English, German, French and Chinese are recorded. As a result, the identification information ID shown in FIG. 2 is recorded as the identification information ID.

Next, the overall operation will be described. The pickup 80 includes a laser diode, a deflection beam splitter, an objective lens, a photodetector, and the like (not shown), irradiates the DVD 1 with the light beam B as reproduction light, and reflects the light beam B reflected from the DVD 1. Receives light, DVD1
Detection signal Sp corresponding to the information pit formed above
Is output.

The detection signal Sp output from the pickup 80 is input to the signal reading unit 81 and detected.
Is read and separated into a detection data signal Spd and a detection clock signal Spc and output, and a servo signal Ssb2 for servo control described later is output.

The detection data signal Spd and the detection clock signal Spc output from the signal reading unit 81 are input to the demodulation correction unit 82, where demodulation processing and error correction processing are performed to generate a demodulation signal Sdm, and the demultiplexer 83 Is output to. In parallel with this, a servo signal Ssb1 for servo control described later is output based on the detected clock signal Spc.

In the demultiplexer 83 to which the demodulation signal Sdm is input, the video data 42, the audio data 43 and the sub picture data 44 as the main video information are separated from the demodulation signal Sdm, and the video signal Sv and the sub video stream signal are separated. The Ssp and the audio stream signal Sa are output to the main video decoder 84, the sub video decoder 85 and the audio decoder 87, respectively. In parallel with this, the demultiplexer 83 uses the demodulated signal Sdm to extract the identification information ID.
At the same time, the additional information signal Sa corresponding to the additional information including other control information is separated and output to the controller 88.

When a plurality of languages are included as the audio data 43 or the sub-picture data 44,
When separating each data from the demodulation signal Sdm, based on the selected stream signal Ss from the controller 88,
The language of the voice set by the setting unit 89 (in the case of FIG. 7, #
N) and the sub-picture language (#K in FIG. 7) corresponding to the audio stream signal Sad and the sub-picture stream signal Ssp
Only the demultiplexer 83 is selected and output.

The main video decoder 84 to which the video signal Sv is input is demodulated by the MPEG2 system and output to the mixer 86 as a demodulated video signal Svd. On the other hand, the sub-picture decoder 85 to which the sub-picture stream signal Ssp is input
Outputs the demodulated sub-picture data 44 included in the sub-picture stream signal Ssp to the mixer 86 via the switch SW as the demodulated sub-picture signal Sspd. In parallel with this, the sub-picture decoder 85 causes the sub-picture stream signal Ssp.
The command such as the compulsory image output command included in the sub picture data 44 is separated into the command signal Sc
To the controller 88.

The demodulated video signal Svd output from the main video decoder 84 and the demodulated sub video signal Sspd output from the sub video decoder 85 (corresponding demodulated video signal S
Synchronized with vd. ) Are mixed by the mixer 86 and output as a final video signal Svp to be displayed to a display unit such as a CRT (Cathod Ray Tube) not shown.

Next, the audio decoder 87 to which the audio stream signal Sad is input performs predetermined decoding on the input audio stream signal Sad and outputs it as a demodulated audio signal Sadd to a speaker or the like not shown.

On the other hand, the controller 88 outputs the sub-picture on the basis of the additional information signal Sa and the command signal Sc including the identification information ID and other control information input from the demultiplexer 83 and the input signal Sii from the setting section 89. The sub-picture output signal Ssb is output to the switch SW to control the. The switch SW is killed by the sub-picture output signal Ssb, the output of the demodulated sub-picture signal Sspd is controlled, and thereby the display of the sub-picture is controlled.

In parallel with this, when the sub-picture selection section 89A of the setting section 89 selects a sub-picture to be displayed, the controller 88 outputs the stream number and language to the memory 90 for recording, and When the language of the voice to be output is selected by the voice selection unit (not shown) of the setting unit 89, the stream number and the language are output to the memory 90 and recorded. In FIG. 7, the English sub-picture is selected as the sub-picture to be displayed, the corresponding stream number # 2 (see FIG. 2) is stored in the memory 90, and the English sound is selected as the sound to be output. The corresponding stream number # 2 (see FIG. 2) is stored in the memory 90.

The operation of selecting the language of the sub-picture in the sub-picture selection section 89A is cyclic, for example, as shown in FIG. 8, that is, every time the button or the like in the sub-picture selection section 89A is operated once. The operation of changing only one language is continuously performed, whereby the selection operation is executed.
Here, in FIG. 8, “non-selection” means that the display of the sub-picture is turned off.

Further, the controller 88 outputs the stream number corresponding to the selected sub-picture to be displayed and the stream number corresponding to the audio to be output to the demultiplexer 83 as the selected stream signal Ss.

As described above, the user needs to specify the sub-picture stream number to be displayed or the language of the sub-picture each time each title reproduction is started. Similarly, for audio, it is necessary to specify the audio stream number to be reproduced or the audio language.

In addition to this, in the present embodiment,
The controller 88 uses the setting unit 89 to reproduce the playback device S.
Unique playback display language specific to 2 (effective when the sub-video stream number or sub-video language to be displayed, or the audio stream number or audio language to be played, as described above, is not specified. When the language of the sub-picture to be displayed or the language of the audio to be reproduced) is set, it is output to and stored in the memory 90 as the unique reproduction display language. FIG. 7 shows a state in which Japanese is set and stored as the unique reproduction display language of the reproduction device S2. At this time, the area in the memory 90 for storing the peculiar reproduction display language of the reproducing apparatus S2 is composed of a non-volatile memory unlike the other areas, and even if the reproducing apparatus S2 is powered off, The unique reproduction display language of S2 is retained.

In this way, once the unique reproduction display language of the reproduction apparatus S2 is set, the sub-picture stream number or the sub-picture language to be displayed by the user, the audio stream number or the sound language to be reproduced. Even if the setting is omitted, the sub-picture or audio in the language set as the unique reproduction display language can be reproduced and displayed.

The setting section 89 also includes a sub-picture display switching section 89B for switching on / off the display of the sub-picture, and the setting content of the sub-picture display switching section 89B is included in the input signal Sii. Output to the controller 88,
This controls the output of the sub-picture output signal Ssb (that is, the activation of the switch SW).

In parallel with these operations, the servo control unit 9
1 outputs a servo control signal Sb1 for focus servo control and tracking servo control in the pickup 80 based on the servo signals Ssb1 and Ssb2, and a servo control signal Sb2 for controlling the rotation of the spindle motor 92. Output.

Then, in the pickup 80, focus servo control and tracking servo control are performed based on the servo control signal Sb1, and the light beam B as reproduction light is correctly recorded on the information track on the DVD 1 where information is recorded. Is irradiated. In addition, the spindle motor 92
Causes the DVD 1 to rotate correctly based on the servo control signal Sb2.

Next, of the playback apparatus S2, particularly the display control operation at the time of forced image output of the sub-picture using the identification information ID (see FIG. 2) according to the present invention will be described focusing on the operation of the controller 100. This will be described using the flowchart shown in FIG. In the flowchart shown in FIG. 9,
It is assumed that the sub-picture display switching section 89B of the setting section 89 is set not to display the sub-picture.

As shown in FIG. 9, in the sub-picture display control operation using the identification information ID, a forced picture output command is first issued from the demodulation signal Sdm based on the control signal Sc from the sub-picture decoder 85. It is determined whether or not it has been detected (step S1).

When the forced image output command is not detected (step S1; NO), the main image or the like is output as it is, and when the forced image output command is detected (step S1; YES), the sub image is selected. It is determined whether or not the language of the sub-picture is selected in section 89A and stored in memory 90 (step S2). Then, when it is selected ("# 2; English" in the memory 90 shown in FIG. 7) (step S2; YES), the sub-image corresponding to the language (English in this case) is forcedly output (step S2; YES). S
3), end the process.

On the other hand, if it is determined in step S2 that the sub-picture language has not been selected by the sub-picture selection section 89A (step S2; NO), then the setting section 89 determines the language of the audio to be output. It is determined whether or not it is selected (step S4). Then, when the language of the voice to be output is selected (“# 2; English” in the memory 90 shown in FIG. 7) (step S4; YE
S) Next, it is determined whether or not the sub-picture data 44 in the same language as the selected audio language is included in the demodulated signal Sdm (step S5), and if it is included (step S5; (YES), the sub-picture corresponding to the same language as the selected audio language (English in this case) is forcibly output (step S6), and the process ends.
In the process of step S6, when there are a plurality of sub-pictures corresponding to the same language as the audio (not shown in FIG. 2), the smallest stream among the sub-pictures having the same language is used. Display a sub-picture with a number.

Further, in the determination in step S4, if the language of the voice to be output is not selected (step S4; NO), or if the language of the voice to be output is selected, the same language as that language is selected. If the sub-picture data 44 is not included in the demodulated signal Sdm (step S5; NO), then is the preset reproduction language of the reproduction device S2 stored in the nonvolatile area of the memory 90? It is determined whether or not (step S7). Then, when the peculiar reproduction display language of the reproducing device is set (“Japanese” in the memory 90 shown in FIG. 7) (step S7; YES), the selected reproducing device S is selected next.
It is determined whether or not the sub picture data 44 in the same language as the unique reproduction display language of No. 2 is included in the demodulated signal Sdm (step S8), and when it is included (step S8).
8; YES), the sub-picture corresponding to the same language (Japanese in this case) as the peculiar reproduction display language of the selected reproduction apparatus S2 is forcedly outputted (step S9), and the processing is ended. In the process of step S9, when there are a plurality of sub-pictures corresponding to the same language as the unique reproduction display language (not shown in FIG. 2), the sub-pictures having the same language are the most. The sub-picture with a small stream number is displayed.

Further, if it is determined in step S7 that the peculiar reproduction display language of the reproducing device S2 is not set (step S7; NO), or if the peculiar reproduction display language of the reproducing device S2 is set, that language is not set. If the sub-picture data 44 of the same language is not included in the demodulated signal Sdm (step S8; NO), then the sub-picture of the first stream in the preset sub-picture data 44 is forced. The image is displayed (step S10) and the process ends.

According to the operation of the reproducing apparatus S2 described above, the memory 90 stores the language of the sub-picture and the language of the audio to be reproduced and displayed, or the characteristic reproduction display language in the reproducing apparatus S2, and the identification is performed based on these. Since the display of the sub-picture is controlled by using the information ID, it is possible to select and reproduce an appropriate kind of sub-picture and audio that respects the will of the viewer at the time of reproduction.

Further, since the forced image output command is extracted together with the identification information ID, it is possible to forcibly display the necessary sub-picture at the time of reproduction based on the forced image output command.

Furthermore, since the subtitle information described in a plurality of languages and the audio information composed of a plurality of languages are recorded, it is necessary to reproduce the proper subtitles and audio corresponding to the main video at the time of reproduction. You can

In the above embodiment, the language of the sub-picture to be reproduced and displayed and the language of the audio or the unique reproduction display language are stored, and the display of the sub-picture is controlled based on these by using the identification information ID. However, the present invention controls the selection of the audio language to be reproduced by using the identification information ID, based on the stored sub-picture language to be displayed and the audio language or the unique reproduction display language. It is also applicable in the case. In this case, if the language of the sub-picture and the language of the audio to be played back and displayed are set, the audio of the set language is played back based on them, and only the unique playback display language is set. If so, the sound corresponding to the specific reproduction display language is reproduced.

Furthermore, in the above embodiment, an example in which the present invention is applied to the DVD 1 has been shown, but the present invention is not limited to this, and the main video, sub-video and audio are recorded on an information recording medium other than the optical disc. It is widely applicable to recording and reproducing this.

[0102]

As described above, according to the first aspect of the present invention, the display sub-picture type information, the reproduction audio type number and the peculiar reproduction display type information set by the setting means are stored in them. Based on this, since the display of sub-picture information and the reproduction of audio information are controlled using the identification information, it is possible to select and reproduce an appropriate type of sub-picture and audio information that respects the will of the viewer at the time of reproduction. .

According to the invention described in claim 2, according to claim 1
In addition to the effect of the invention described in (1), the information recording medium further stores timing information indicating the timing at which the sub-picture information should be forcibly displayed, and the extraction means extracts the timing information together with the identification information. Therefore, it is possible to forcibly display the necessary sub-picture information during reproduction based on the timing information.

According to the invention described in claim 3, according to claim 1
Alternatively, in addition to the effect of the invention described in 2, the plurality of types of sub-picture information is caption information described in a plurality of languages, and the sub-picture type identification information is identification information for identifying the type of the language. Furthermore, since the plurality of types of audio information are voice information composed of a plurality of types of languages, and the voice type identification information is identification information for identifying the type of the language, the main video information during reproduction is It is possible to reproduce subtitles and audio in an appropriate language corresponding to.

[Brief description of drawings]

FIG. 1 is a diagram showing a physical structure (physical format) of recorded information.

FIG. 2 is a diagram showing an example of identification information, FIG. 2 (a) is a diagram showing a case of an audio stream, and FIG. 2 (b) is a diagram showing a case of a sub-picture stream.

FIG. 3 is a diagram showing a frame image forming a GOP.

FIG. 4 is a diagram showing a logical structure (logical format) of recorded information.

FIG. 5 is a diagram showing recording information divided into interleaved units.

FIG. 6 is a block diagram showing a schematic configuration of a recording device.

FIG. 7 is a block diagram showing a schematic configuration of a playback device.

FIG. 8 is a diagram illustrating a sub-picture language selection operation.

FIG. 9 is a flowchart showing a sub-picture display control operation.

[Explanation of symbols]

 1 ... DVD 2 ... Video manager 3, 63 ... VTS 10 ... VOB 11 ... Control data 20 ... Cell 30 ... VOB unit 41 ... Navi pack 42 ... Video data 43 ... Audio data 44 ... Sub-picture data 50 ... PCI data 51 ... DSI Data 52 ... GOP 60 ... Program 61, 61A, 61B ... PGC 62 ... Title 70 ... VTR 71 ... Memory 72 ... Signal processing unit 73, 74 ... Hard disk device 75 ... Controller 76 ... Multiplexer 77 ... Modulator 78 ... Mastering device 80 ... Pickup 81 ... Signal reading unit 82 ... Demodulation correction unit 83 ... Demultiplexer 84 ... Main video decoder 85 ... Sub video decoder 86 ... Mixer 87 ... Audio decoder 88 ... Controller 89 ... Setting unit 89A ... Sub video selection unit 89B ... Sub Video Display switching unit 90 ... Memory 91 ... Servo control unit 92 ... Spindle motor B ... Light beam ID ... Identification information S1 ... Recording device S2 ... Reproducing device ST ... Cue sheet Sr ... Compression multiplexed signal Si ... Control information signal Sac ... Identification information signal Sa ... Additional information signal Scc ... Information selection signal Sm ... Disk recording signal Sap ... Information addition compression multiplex signal Sp ... Detection signal Spd ... Detection data signal Spc ... Detection clock signal Sdm ... Demodulation signal Ssb1, Ssb2 ... Servo signal Sb1, Sb2 ... Servo control signal Sii ... Input signal Sad ... Audio stream signal Ssp ... Sub video stream signal Sv ... Video signal Svd ... Demodulated video signal Sspd ... Demodulated sub video signal Sadd ... Demodulated audio signal Svp ... Video signal Ss ... Selected stream signal Sc ... Command Signal Ssb ... Sub-picture output signal Tt ... Time code R ... Recording information

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical indication location G11B 27/034 G11B 27/02 K (72) Inventor Yoshiaki Moriyama 6-1, 1-1 Fujimi, Tsurugashima City, Saitama Prefecture Ionia Co., Ltd. Research Institute (72) Inventor Akihiro Tozaki 6-1, 1-1 Fujimi, Tsurugashima City, Saitama Pioneer Co., Ltd. Research Institute (72) Inventor Junichi Juno, Tokorozawa City, Saitama Prefecture 2626, Pioneer Stock Company Tokorozawa factory

Claims (3)

[Claims] 1. Recorded information including main video information, a plurality of types of sub-video information corresponding to the main video information, and a plurality of types of audio information corresponding to the main video information are each sub-video information. Information reproducing apparatus for reproducing the recorded information from the information recording medium recorded together with the identification information including the sub-picture type identification information for identifying the type of audio information and the audio type identification information for identifying the type of each of the audio information. A detection unit that detects the recording information and the identification information from the information recording medium and outputs the detection information as a detection signal; an extraction unit that extracts the identification information from the detection signal; Displayed sub-picture type information indicating the type of information, reproduction audio type information indicating the type of the audio information to be reproduced, and sub-video or audio type to be reproduced and displayed specific to the information reproducing apparatus. Setting means for setting the unique reproduction display type information, storage means for respectively storing the set display sub-picture type information, reproduction audio type information, and unique reproduction display type information, and the stored display sub-picture type information And a control means for controlling the display of the sub-picture information and the reproduction of the audio information by using the extracted identification information based on the reproduced audio type information and the unique reproduction display type information. Information reproduction device. 2. The information reproducing apparatus according to claim 1, wherein the information recording medium further records timing information indicating a timing at which the sub-picture information should be forcibly displayed when reproducing the recording information. The information reproducing apparatus is characterized in that the extracting means extracts the timing information together with the identification information. 3. The information reproducing apparatus according to claim 1, wherein the plurality of types of sub-picture information are caption information described in a plurality of languages, and the sub-picture type identification information is of the language. Identification information for identifying the type, further, the plurality of types of voice information is voice information configured in a plurality of types of languages, and the voice type identification information is an identification for identifying the type of the language. An information reproducing apparatus characterized by being information.